Multifrequency observations of KAZ 102 during ROSAT All Sky Survey

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Iue, Quasars, Rosat Mission, Sky Surveys (Astronomy), Ultraviolet Radiation, X Ray Spectra, Active Galactic Nuclei, Correlation, Light Curve, Variability, X Ray Astronomy

Scientific paper

Results of X-ray observations, ultraviolet observations with the IUE camera, and optical photometry observations carried out with a 70 cm telescope, of Kaz 102, a close by radio quiet quasar, are presented. Optical and UV observations indicated that during the X-ray monitoring the source exhibited variability of 10 percent. Comments on the X-ray variability were not made due to systematic errors. It was hoped to be able to correlate the UV and optical photometry when all the optical data of the collaboration would be analyzed, the perspective of a cross correlation with X-rays are not good, because optical data indicated a modest variability. If the X-ray variability is similar, it is doubted that systematic errors could be reduced in such a way that the variability can show up. The X-ray spectrum indicates some soft excess, which is not unexpected in the PSPC (Position Sensitive Proportional Counter) energy range. Results are compared with the Einstein 1979 data.

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